Home / 27,354.24-37,747.78-15,420

Finding the Fourth Proportional to 27,354.24, 37,747.78 and 15,420

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Solution

The fourth proportional to 27,354.24, 37,747.78 and 15,420 is: 21,279.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,354.24 : 37,747.78 = 15,420 : x
  2. Step 2: Convert to fraction form
    27,354.24/37,747.78 = 15,420/x
  3. Step 3: Cross multiply
    27,354.24x = 37,747.78 × 15,420
  4. Step 4: Simplify right side
    27,354.24x = 582,070,767.60
  5. Step 5: Solve for x
    x = 582,070,767.60/27,354.24
  6. Step 6: Final answer
    x = 21,279.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.